Newly disclosed vulnerability Common Vulnerabilities and Exposures (CVE)-2026-24858 [Common Weakness Enumeration (CWE)-288: Authentication Bypass Using an Alternate Path or Channel] allows malicious actors with a FortiCloud account and a registered device to log in to separate devices registered to other users in FortiOS, FortiManager, FortiWeb, FortiProxy, and FortiAnalyzer, if FortiCloud single sign on (SSO) is enabled on devices.
Users are vulnerable to CVE-2026-24858 even if they updated Fortinet devices to address previously disclosed FortiCloud SSO bypass vulnerabilities CVE-2025-59718 and CVE-2025-59719 [CWE-347: Improper Verification of Cryptographic Signature]. CVE-2025-59718 and CVE-2025-59719 affect FortiOS, FortiWeb, FortiProxy, and FortiSwitch Manager, and allow malicious actors to bypass the SSO login authentication via a crafted Security Assertion Markup Language (SAML) message.
Read more…
Source: U.S. Cybersecurity and Infrastructure Security Agency
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- CISA Releases Fourteen Industrial Control Systems Advisories
June 15, 2023
CISA released fourteen Industrial Control Systems (ICS) advisories on June 15, 2023. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS. ICSA-23-166-01 SUBNET PowerSYSTEM Center ICSA-23-166-02 Advantech WebAccessSCADA ICSA-23-166-03 Siemens SICAM Q200 Devices Read more… Source: U.S. Cybersecurity and Infrastructure Security Agency
- US government agencies hit in global cyberattack
June 15, 2023
“Several” US federal government agencies have been hit in a global cyberattack that exploits a vulnerability in widely used software. The US Cybersecurity and Infrastructure Security Agency “is providing support to several federal agencies that have experienced intrusions affecting their MOVEit applications,” Eric Goldstein, the agency’s executive assistant director for cybersecurity, said in a statement on ...
- VMware ESXi Zero-Day Used by Chinese Espionage Actor to Perform Privileged Guest Operations on Compromised Hypervisors
June 13, 2023
As Endpoint Detection and Response (EDR) solutions improve malware detection efficacy on Windows and Linux systems, certain state-sponsored threat actors have shifted to developing and deploying malware on systems that do not generally support EDR such as network appliances, SAN arrays, and VMware ESXi hosts. In late 2022, Mandiant published details surrounding a novel malware system deployed ...
- MOVEit Vulnerabilities: What You Need to Know
June 12, 2023
Extortion actors have been actively exploiting a recently patched vulnerability in MOVEit Transfer, a file-transfer application that is widely used to transmit information between organizations. The nature of the software affected means that attackers can exploit unpatched systems to mount a supply chain attack against multiple organizations. While the original vulnerability (CVE-2023-34362) was patched on May ...
- CISA Releases Two Industrial Control Systems Advisories
June 8, 2023
CISA released two Industrial Control Systems (ICS) advisories on June 8, 2023. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS. ICSA-23-159-01 Atlas Copco Power Focus 6000 Read more… Source: U.S. Cybersecurity and Infrastructure Security Agency Related story: CISA Adds One Known Exploited Vulnerability to Catalog
- #StopRansomware: CL0P Ransomware Gang Exploits MOVEit Vulnerability
June 7, 2023
CISA and FBI released a joint Cybersecurity Advisory (CSA) CL0P Ransomware Gang Exploits MOVEit Vulnerability in response to a recent vulnerability exploitation attributed to CL0P Ransomware Gang. This joint guide provides indicators of compromise (IOCs) and tactics, techniques, and procedures (TTPs) identified through FBI investigations as recently as May this year. Additionally, it provides immediate ...